Borla - 05-06 GTO Stainless Steel Cat-Back + "X" pipe
BORLA Cat-Back™ exhausts feature patented, straight-through and multi-core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy and the distinctive BORLA Sound of Power respected by motoring enthusiasts everywhere.
Flowmaster Exhaust - 05-06 Pontiac GTO Axle-back System - Dual Rear Exit - Force II - Moderate Sound
These quieter sounding systems are designed to replace original rear mounted mufflers located behind the rear axle using factory style connections. With easy fit in mind, these systems are mandrel bent for maximum performance, include specially selected mufflers and all necessary parts and hardware for easy installation. Force II systems deliver a moderate exterior tone and moderate to mild interior tone, and are suited to customers looking for efficiency improvements without a lot of noise. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage.
Flowmaster Exhaust - 2004 Pontiac GTO 5.7L 2.50" Outlets, Cat-back System - Dual Rear Exit - American Thunder - Moderate Sound
For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster cat-back exhaust system provides. D.O.R. (Dual Out Rear) systems are the perfect choice. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their perfomance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.
BMR strut tower braces will increase the handling capabilities of your Grand Prix by eliminating strut tower deflection and increasing chassis rigidity. BMR provides the strongest braces by far in the market as shown in the images below. Built with 1/4" wall thickness 1-1/8" CNC machined aluminum tube and laser cut 3/16" steel mounting plates, you can be sure that quality and strength has not been compromised. Available in Black Hammertone or red powdercoat.'97-05 models only. NOTE: rear strut tower brace will not fit 04-05 Grand Prix. All STB will fit 00-05 Monte Carlo/Impalas (all models)
BMR strut tower braces will increase the handling capabilities of your Grand Prix by eliminating strut tower deflection and increasing chassis rigidity. BMR provides the strongest braces by far in the market as shown in the images below. Built with 1/4" wall thickness 1-1/8" CNC machined aluminum tube and laser cut 3/16" steel mounting plates, you can be sure that quality and strength has not been compromised. Available in Black Hammertone or red powdercoat.'97-05 models only. NOTE: rear strut tower brace will not fit 04-05 Grand Prix. All STB will fit 00-05 Monte Carlo/Impalas (all models)
Koni Shocks - 04-06 GTO Koni Rear Shock, Single Adjustable, Sport (Yellow), Pair
Koni makes one of the best sets of adjustable rear shocks for the late model GTO's.
Valving adjustment can be done through the trunk by simply turning the supplied knob.
Great handling mod and very useful in controlling wheelhop.
Price is for a pair.
Koni Shocks - 04-06 GTO Koni Shocks, Front, Sport, Adjustable
Sport Shocks
Why the industries first adjustable shock is still the best:
- Big handling improvements
- Reasonable ride quality
- Re-buildable for custom vehicle setups
- Best KONl shock for all lowering springs
- Lifetime Warranty
Front application, cartidge only. Price is for one pair.
Kooks Custom Headers - 04 GTO LS1 Off-Road Stainless Connection Pipes w/ Metallic Cats, Must be used with Kooks Headers.
Inlet 3"
Outlet 2 1/2" OEM Connections
Unit Each
Kooks Custom Headers - 04 GTO LS1 Stainless Connection Pipes w/ Metallic Cats, Must be used with Kooks Headers.
Inlet 3"
Outlet 2 1/2" OEM Connections
Unit Each
Kooks Custom Headers - 04-06 GTO (LS1/LS2) Headers Stainless System With Required 02 Extension Harness
Tube 1 3/4"
Coll 3"
Unit Pair
Kooks Custom Headers - 04-06 GTO (LS1/LS2) Headers Stainless System With Required 02 Extension Harness
Tube 1 7/8"
Coll 3"
Unit Pair
Kooks Custom Headers - 05-06 GTO LS2 Off-Road Stainless Connection Pipes w/ Metallic Cats, Must be used with Kooks Headers.
Inlet 3"
Outlet 3" OEM Connections
Unit Each
Kooks Custom Headers - 05-06 GTO LS2 Stainless Connection Pipes w/ Metallic Cats, Must be used with Kooks Headers.
Inlet 3"
Outlet 3" OEM Connections
Unit Each
Magnaflow - 04-06 Pontiac GTO - Direct Fit Catalytic Converter
V8 5.7L GAS; Front,Off Road Use Only, Direct Fit Catalytic Converter
Magnaflow - 04-06 Pontiac GTO - Stainless Performance Exhaust Cat-Back System
V8 5.7L GAS 2.5 in. Tubing, Tru-X Crossover Pipe, Rear Exit; 3 in Rolled Tips
